400 Hz Transformers for Aircraft and Marine Power

Our LW series power toroidal transformers for 400 Hz  operating frequency are exceptionally light weight as we use CCA type magnet wire. They are suitable for both single phase and three-phase power systems.

Product Features

Operating Frequency:     400 Hz
Core Material:                Toroidal core wound with 4 mil grain-oriented silicon steel         
Magnet Wire:                 CCA (Copper Clad Aluminum) for all windings            
Insulation System:          Class A (105C)
Primary Voltages:           As Specified by Customer
Secondary Voltages:      As Specified by Customer

Weight Examples based on one Primary and Dual Secondaries

Single Phase Product Specifications




4.5 lbs


7.5 lbs


16.0 lbs


28.0 lbs







Three Phase Product Specifications
VA Weight
3,000 13.5 lbs
6,000 22.5 lbs
15,000 48.0 lbs
30,000 84.0 lbs